When you say HoF do you mean the official IBHOF or your saying that in your opinion he has a HoF career?

Off the bat there's not that many trainers in the hall itself... Arcel, Dundee, D'Amato, Duva, Steward, Futch and Wilfred to name some.

Arcel, Dundee, D'Amato & Duva never laced up gloves I know that much. Also Beristain never laced up gloves. Same for Clancy don't believe he ever boxed as amateur.

Wilfred I don't know a lot about.

That leaves Futch or Steward... Futch was a pro-boxer.
So gonna go with Steward.